Error 502 when dockerizing an application (React) using Nginx proxying, how to fix?

Question

JavaScript

I'm trying to dockerize a React application using nginx proxying. For nginx I use the image from the dockerhub, for nodejs I write my own Dockerfile, in addition, for nginx I write my own config and use it.
When I start the application, I get a 502 error (Bad Gateway) and the following error comes to the logs:

*16 connect() failed (111: Connection refused) while connecting to upstream, client: 172.28.0.1, server: ~.*, request: "GET / HTTP/1.1", upstream: " 172.28.0.2:3000 ", host : "localhost"
*1 connect() failed (111: Connection refused) while connecting to upstream, client: 172.28.0.1, server: ~.*, request: "GET /favicon.ico HTTP/1.1", upstream: " 172.28 .0.2:3000/favicon.ico ", host: "localhost", referrer: " localhost "

The project structure is as follows:

- project
  - app
    - package.json *and more*
  - docker
    - confing
      - nginx
        - default.conf
    - dockerfile
      - node
        - Dockerfile
    docker-compose.yml

My Dockerfile for Nodejs:

FROM node:13.12.0-alpine

# set working directory
WORKDIR /home/node/app

# install app dependencies

COPY package*.json ./

RUN npm install react-scripts -g
RUN npm install

# add app
COPY . ./

# start app
CMD ["npm", "start"]

My default.conf for nginx:

server {
    listen 80;
    server_name ~.*;


    location / {
        root /var/www/html/public;
        proxy_pass http://nodejs:3000;
    }
}

My docker-compose.yml:

version: '3'

services:
  nodejs:
    build:
      context: ../app
      dockerfile: ./../docker/dockerfile/node/Dockerfile
    container_name: nodejs
    networks:
      - my-network
    restart: unless-stopped
    volumes:
      - ../app:/home/node/app
    expose:
      - 3000
    environment:
      - NODE_ENV=development
  nginx:
    networks:
      - my-network
    image: nginx:latest
    container_name: user-nginx
    volumes:
        - ../app:/var/www/html
        - ./logs/nginx:/var/log/nginx
        - ./config/nginx:/etc/nginx/conf.d
    ports:
      - 80:80
networks:
  portfolio:
    name: my-network
    driver: bridge